DD121239A1 - - Google Patents
Info
- Publication number
- DD121239A1 DD121239A1 DD18835975A DD18835975A DD121239A1 DD 121239 A1 DD121239 A1 DD 121239A1 DD 18835975 A DD18835975 A DD 18835975A DD 18835975 A DD18835975 A DD 18835975A DD 121239 A1 DD121239 A1 DD 121239A1
- Authority
- DD
- German Democratic Republic
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD18835975A DD121239A1 (en) | 1975-09-16 | 1975-09-16 | |
| DE19762632256 DE2632256A1 (en) | 1975-09-16 | 1976-07-17 | Half-duplex communications system - allows listener to interrupt speaker by disconnecting his transmit amplifier and connecting in his receive amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD18835975A DD121239A1 (en) | 1975-09-16 | 1975-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD121239A1 true DD121239A1 (en) | 1976-07-12 |
Family
ID=5501689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD18835975A DD121239A1 (en) | 1975-09-16 | 1975-09-16 |
Country Status (2)
| Country | Link |
|---|---|
| DD (1) | DD121239A1 (en) |
| DE (1) | DE2632256A1 (en) |
-
1975
- 1975-09-16 DD DD18835975A patent/DD121239A1/xx unknown
-
1976
- 1976-07-17 DE DE19762632256 patent/DE2632256A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE2632256A1 (en) | 1977-03-17 |